Been to EWR two weeks ago.
The walk from Terminal A to the AirTrain station A is 15 minutes, assuming one walks "New York style." For everyone else it's 20 minutes.
I know that the new AirTrain is supposed to take over in 2029. But until then, are there any plans to extend the existing legacy train to Terminal A?
No I don’t even think the manufacturer is in business.

Great planning by the PA as always.